Rockwell Automation 1775-S5_SR5,D17756.5.5 User Manual PLC-3 FAMILY I/0 User Manual
Page 153
Binary Command Language
Appendix A
A-25
Verify Block Command
Hex: 15
Parameters: Starting address, number of words, data to compare
with memory
Description: The processor can compare a block of data in memory to
reference data from an external device. The following command block
verifies the first three words in the binary section of the data table
(section eight):
STX
02
ISC
14
SIZ
0C
CMD
15
24
08
00
03
00
DAT
04
41
E1
02
E3
15
ETX
03
CHK
89
The data bytes store:
address mask (24 hex)
first address byte (08 hex)
second address byte (00 hex)
lower byte of size word (03 hex)
upper byte of size word (00 hex)
lower byte of the first data word (04 hex)
upper byte of the first data word (41 hex)
lower byte of the second data word (E1 hex)
upper byte of the second data word (02 hex)
lower byte of the third data word (E3 hex)
upper byte of the third data word (15 hex)
The processor responds to a verify block command with one of the
following response codes:
Response Codes
Hex
Description
00
Success
04
Address unknown
05
Address invalid - end of section
06
Access not allowed
08
Address not complete